听力原文：Before Mr. Bush came to power, the federal government had a surplus. It was spending less than it received in taxes and there was even speculation that most of the national debt might eventually be repaid.
There is speculation that Mr. Bush would eventually repay all the national debts in his term.
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What should be done to improve students' awareness of the importance of a healthy diet？
A. Inform. the students of the calorie content of the food they eat.
B. Help students foster a taste for home cooked food.
C. Stop the cafeterias from selling fast food.
D. Provide programs like those offered at Live Oak High School
What is the chief reason for the increase in obese students？
A. The genes of the students.
B. The poor quality of school cafeteria food.
C. Inactiveness due to playing computer games.
D. The negative example of their parents.
It is almost impossible to eliminate counterfeiting for all the following reasons EXCEPT ______.
A. consumers demand brand-name products
B. a variety of products are easy to copy
C. legitimate firms can also benefit from counterfeiting sometimes
D. laws against counterfeiting are difficult to enforce
According to the passage, which of the following statements is TRUE？
A. The mineral elements will not be absorbed by the plant unless they are dissolved in its root.
B. The woody stems contain more water than the leaves.
C. Air existing around the leaf is found to be saturated.
D. Only part of the carbon dioxide in the plants is synthesized.
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